Cleaning apparatus for swimming-pools and the like.



J. M. DAVIDSON.

CLEANING APPARATUS FOR SWIMMING POOLS AND THE LIKE.

APPLICATION FILED NOV. 29, 1912.

Patented Mar.25,1913.

i fl ED STATES PATENT OFFICE.

JOHN in. navmson, or r'rrrssuaen, PENNSYLVANIA, assrelvoaro WM. 3.SGAIFE & SONS COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEWJERSEY.

CLEANING APPARATUS FORSWIMMING-POOLS AND THE LIKE.

Specification of Letters Patent.

Application filed November 29, 1912. Serial No. 733,970. g

To all whom it may concern:

Be it known that I, JOHN M. DAVIDSON, a citizen of the United States,residing at Pittsburgh, Pennsylvania, have invented cer tain new anduseful Cleaning Apparatus for Swimming-Pools and the Like, which thefollowing is a specification.

. My invention relates to the art of dredgin and is particularlydesigned to accomphsh the cleaning of the bottoms of swimming tanks, andthe like, where sediment collects, and it is desirable to remove thiswithout emptying the water in the tank."

. .I have shown a form of apparatus em-. bodying my invention intheaccompanymg drawing, wherein- Figure 1 illustrates a broken section of aswimming tank with my cleaning device therein, and Fig. 2 is an underplan view of the cleaner nozzle. j

.It is well known that in tanks, such as swimming pools for example,there is a rapid collection of sediment or slime on the bottom, due inpart to the matter washed from the bodies of the bathers, and in part tochemicals used in purif ing the water. Heretofore it has been conslderednecessary in order to clean suchtanks to entirely empty the watertherein. This is an expensive proceeding, because of the waste of water,the sus ension of the use of the tank, and the cost 0 heating a newcharge of water. I

have discovered that the shme may be removed from the bottom of such atank without removing the water, and without stirring up the sediment tocontaminate the water..

It being understood that the bottom surface of a swimming pool isusually smooth and hard, as tiling, etc., and that the slime thereon isof an oily. nature and contains hair and such matter, it will beunderstood that if the slime can be. scraped ofi the bottom and thenimmediately removed without stirring, my objects can be attained. Asshown in the accompanying drawings, I provide a rigid ipe B long enoughto reach the'bottom of the tank A and carrying on the lower end a suckerhead C, made something after the fashion of a pneumatic carpet sweeperhead, but covered on the under side with a scraper D which is made ofsoft or even interferin rubber and in ribbed form, as shown at d, I

and which by means of slots and bolts 03 can be adjusted to properrelation to outlet- 0. This ribbed rubber partis designed to make thenozzle closely fit the bottom of the tank,

to prevent the entry of water from the rear attached to a exible pipe Gand any convenient form of pump H, audit will be understood that inoperation the pump withdraws from the tank only so much water as isnecessary to wash in the slime accumulated in front of the sucker had asproceeds over the bottom. The check valve F allows the nozzle to belifted out of the water without escape of the sediment al readycollected. By thism'eans I am able to entirely remove the slime without'stirring or contaminating the water above, or removing any large'portion ofthe water, with the other use of the tank. Other a vantageswill readily occur to those familiar with the art.

Having thus described my invention and illustrated its use, what I claimis:

1. In cleaning apparatus, a combined scraper and sucker head comprisinga casing with an open nozzle, a rubber scraper slidably mounted on therear and bottom of the casmg, an upwardly projecting shield on' thefront and top of the' casin and a. check valve in the casing,substantlallyas and for the purposes described.

2. In cleaning apparatus fortanks, a combined scraper and sucker headcomprising a casing with an open nozzle, a reslllent scraper mounted onthe rear and bottom of the casing, an upwardl forward projecting shleldon the front oft e casing, as and for the purposes described.

JOHN M. DAVIDSON.

Witnesses:

Jo. BAILY Brown, FREDK. STAUB.

